As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MCN - MAJOR REPAIR - DURING C16, DISCOVERED CORROSION ON THE LT INBOARD FLAP, INBOARD CAM TRACK AT WBL 71.00L. NO CORROSION REMOVAL LIMITS ARE AVAILABLE FOR CAM TRACK. MAINTENANCE REMOVED CAM TRACK AND INSTALLED NEW CAM TRACK ON THE LT INBOARD FLAP, INBOARD TRACK AT WBL 71.00L IAW BOEING 737-300 CMM 57-53-22.